Home / 231,999.42-320,159.07-131,397.42

Finding the Fourth Proportional to 231,999.42, 320,159.07 and 131,397.42

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Solution

The fourth proportional to 231,999.42, 320,159.07 and 131,397.42 is: 181,328.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,999.42 : 320,159.07 = 131,397.42 : x
  2. Step 2: Convert to fraction form
    231,999.42/320,159.07 = 131,397.42/x
  3. Step 3: Cross multiply
    231,999.42x = 320,159.07 × 131,397.42
  4. Step 4: Simplify right side
    231,999.42x = 42,068,075,787.60
  5. Step 5: Solve for x
    x = 42,068,075,787.60/231,999.42
  6. Step 6: Final answer
    x = 181,328.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.